Finding the Fourth Proportional to 2,176.92, 3,003.72 and 1,292.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,176.92 : 3,003.72 = 1,292.40 : x
2. Step 2: Convert to fraction form
   2,176.92/3,003.72 = 1,292.40/x
3. Step 3: Cross multiply
   2,176.92x = 3,003.72 × 1,292.40
4. Step 4: Simplify right side
   2,176.92x = 3,882,007.73
5. Step 5: Solve for x
   x = 3,882,007.73/2,176.92
6. Step 6: Final answer
   x = 1,783.26